package com.itheima.reggie.config;

import com.itheima.reggie.common.JacksonObjectMapper;
import com.itheima.reggie.interceptor.LoginCheckInterceptor;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;

import java.util.List;

@Slf4j
@Configuration
public class WebMvcConfig implements WebMvcConfigurer {
    @Autowired
    private LoginCheckInterceptor loginCheckInterceptor;
    @Override
    public void addResourceHandlers(ResourceHandlerRegistry registry) {
        log.info("开始进行静态资源映射");
        registry.addResourceHandler("/backend/**").addResourceLocations("classpath:/backend/");
        registry.addResourceHandler("/front/**").addResourceLocations("classpath:/front/");


    }

    @Override
    public void addInterceptors(InterceptorRegistry registry) {

        registry.addInterceptor(loginCheckInterceptor)
                //设置拦截所有资源
                .addPathPatterns("/**")
                //排除不拦截资源
                .excludePathPatterns("/employee/login")
                .excludePathPatterns("/employee/logout")
                .excludePathPatterns("/backend/**")
                .excludePathPatterns("/common/**")
                .excludePathPatterns("/front/**")
                .excludePathPatterns("/user/login")
                .excludePathPatterns("/user/sendMsg");
    }

    /**
     * 扩展mvc框架的消息转换器
     */
    @Override
    public void extendMessageConverters(List<HttpMessageConverter<?>> converters) {
        log.info("扩展消息转换器...");
        //创建消息转换器对象
        MappingJackson2HttpMessageConverter messageConverter = new MappingJackson2HttpMessageConverter();
        //设置对象转换器，底层使用Jackson将Java对象转为json
        messageConverter.setObjectMapper(new JacksonObjectMapper());
        //将上面的消息转换器对象追加到mvc框架的转换器集合中
        converters.add(0,messageConverter);
    }
}
